LIU, Tiantian; QI, Zhenhao. Approximate Concepts Analysis Based on {1,0,-1}-valued Formal Contexts. World Scientific Research Journal, [S. l.], v. 11, n. 7, p. 50–58, 2025. DOI: 10.6911/WSRJ.202507_11(7).0006. Disponível em: http://wsr-j.org/index.php/ojs/article/view/19. Acesso em: 12 oct. 2025.